Aspect ratio of presentation stretched and won't go back


I began a presentation using a general template. After adding a pdf to one of the slides, I double-clicked on the page and the aspect ratio of the whole thing stretched and circles are elliptical and the squares are rectangles, etc. I have no idea how to make it go back. I open a previous presentation and it also has stretched.

How do I get it back to a normal display? I am on a 27 inch iMac, and so the aspect ratio of the screen is 16:9.


Hi, could you send us the link of the presentation so we can take a look? Thanks in advance.


It seems that if you make the window of a presentation to become a certain size or aspect ratio, it forces the presentation to fit into that dimension. I resized the window and the presentation went back to normal.

Thanks anyway!


Could you maybe make a screen recording of this? I was unable to recreate the issue, when the window was resized (both in edit and present mode) the aspect ratio remained the same. Could you tell me when exactly this happens and what browser you are using? Thanks in advance.